I know this is kind of beating a dead horse, but:

I was in the engine bay today (a tight fit!) checking something
else and I thought I'd wiggle my high pressure fuel line joints.
(I changed the fuel lines, hose clamps, and firewall fitting a
couple of years ago.)  Three of the joints became wet
with fuel when I wiggled them.  Obviously the fuel line compressed
over time and the (screw type) hose clamps were not able to do
their job.  A half turn with the screwdriver solved the problem.

So:  Even if you're feeling good about having newer fuel lines,
give the fittings a little push now and again to see if the hose clamps
need a bit of tightening.

tabe johnson/87 westy